#include<stdio.h>
int main(){
	int num;
	printf("please enter a num:");
	scanf("%d",&num);
	if(num==1){
		printf("its main view is a triangle\n");
	}else if(num==2){
		printf("the top view of cine is circular\n");
	}else if(num==3){
		printf("left view of the cone is a triangle\n");
	}
	return 0;
}
